Barry Smith schrieb: > > On May 29, 2009, at 4:34 AM, Andreas Grassl wrote: > >> Hello, >> >> I'm working with the PCNN preconditioner and hence with >> ISLocalToGlobalMapping. >> After solving I want to write the solution to an ASCII-file where only >> the >> values belonging to the "external" global numbering are given and not >> followed > ^^^^^^^^^^^^^^^^^^^^^^^ >> >> by the zeros. > > What do you mean? What parts of the vector do you want?
I want the first actdof entries actdof is the number of DOF the system has. the values of indices is in the range of 0 to actdof-1. I create the mapping by ISLocalToGlobalMappingCreate(commw,ind_length,indices,&gridmapping); Due to the "existence" of interface DOF's the sum over all ind_length is greather than actdof, namely the size of the Vectors, but only actdof entries of this Vector are nonzero, if I view it. >> >> Currently I'm giving this commands: >> >> ierr = >> PetscViewerSetFormat(viewer,PETSC_VIEWER_ASCII_SYMMODU);CHKERRQ(ierr); >> ierr = VecView(X,viewer);CHKERRQ(ierr); I hope you got an idea, what problem I have. Cheers, ando -- /"\ \ / ASCII Ribbon X against HTML email / \ -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 315 bytes Desc: OpenPGP digital signature URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090602/e2e720ad/attachment.pgp>
